Parts List For 18 Amp Alternator
 

I put together a parts list to install a 18 amp alternator on a 390-460cc clone engine or Honda - Predator. These are Genuine Honda parts except the rectifier. They are moderately priced and the best parts available for the dollar spent. I will add to this list the proper bolts and wire shield.

Charge coil
https://www.boats.net/product/honda/31630-ZE2-W01

Flywheel
https://www.boats.net/product/honda/31100-ZE3-W21

Rectifier
https://www.ebay.com/itm/Genuine-Koh...97.m4902.l9144

Wire clamp
https://www.boats.net/product/honda/...f1673ab6754551

Bolt
https://www.boats.net/product/honda/...f1673ab6754551

Bolt
https://www.boats.net/product/honda/...f1673ab6754551

Grommet
https://www.boats.net/product/honda/...f1673ab6754551

Re: Parts List For 18 Amp Alternator
 

Be sure to order the appropriate number bolts for the charge coil. You should use this hardware -- it is anti- vibration - made not to back out easily after tightened. The last thing you want is the coil coming loose.

Re: Parts List For 18 Amp Alternator
 

What is the appropriate number bolts for the charge coil? lol

Re: Parts List For 18 Amp Alternator
 

The charge coil requires 4 bolts.

Re: Parts List For 18 Amp Alternator
 

Diagram of Honda Alternator

Re: Parts List For 18 Amp Alternator
 

What is the difference in that flywheel and what comes on the 420 predator? could you get by with just the charge coil?

Re: Parts List For 18 Amp Alternator
 

sticky

Re: Parts List For 18 Amp Alternator
 

The setup requires a 4 pole or 4 magnet flywheel. 2 pole or 2 magnet flywheels will not work.

Re: Parts List For 18 Amp Alternator
 

Thank you makes sense.

Re: Parts List For 18 Amp Alternator
 

This is the 18 amp charge coil. You can understand the need for the 4 magnet flywheel. These are the parts I used in my Micro Truck" - with a digital volt gauge in the dash, my day time voltage my go as high as 14.4 but night time full lights 13.0. I used the factory wire guard and bolt because of the special length. The bolts that hold the stator coil are special to -- the threads cut special and torque just fine but will not vibrate loose. I'm using a Kolher 20 amp rectifier that is fan cooled so I mounted it in my air shroud cover.